Everything about Knightia totally explained
» For the plant genus Knightia, see Knightia (plant)
Knightia is an
extinct genus of
fish well-known from abundant
fossils found in the
Green River Formation of
Wyoming,
United States. They rarely exceeded 25 cm in length and are found throughout the formation.
Knightia was a slender fish and seems to have been a secondary consumer, feeding mainly on
ostracods,
algal forms and
diatoms, as well as some smaller fish. They were schooling fish, and because of this they're frequently found together in mass mortality layers. The tendency for individual fishes to cluster in groups was probably quite common. Modern forms of small fish are noted for schooling, and it's highly probable that the ancient types associated similarly.
Knightia were abundant and important because they were included in the diets of most of the Green River Formation's larger fishes. They were double
scuted, having rows of dorsal and ventral scutes running from the posterior end of the head back to the median fins.
Knightia is the
state fossil of the state of Wyoming.
Species
Further Information
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